/* ADEPT interactive method figure — browser-tab layout
   Inherits site tokens from styles.css. */

.method-figure { margin-top: 65px; position: relative; }

.mf-tabs {
  align-items: flex-end;
  display: flex;
  gap: 6px;
  overflow-x: auto;
  padding: 0;
  position: relative;
  scrollbar-width: none;
  z-index: 2;
}
.mf-tabs::-webkit-scrollbar { display: none; }

.mf-tab {
  --c: var(--surface);
  align-items: baseline;
  background: transparent;
  border: 1px solid var(--line);
  border-bottom: 0;
  border-radius: 11px 11px 0 0;
  color: var(--muted);
  cursor: pointer;
  display: flex;
  flex: none;
  gap: 10px;
  padding: 11px 18px 12px;
  position: relative;
  transition: background 180ms ease, color 180ms ease, padding 180ms ease;
}
.mf-tab:hover { background: var(--c); color: var(--ink); }
.mf-tab:focus-visible { outline: 1px solid var(--ink); outline-offset: -4px; }
.mf-num { font: 400 .6rem/1 var(--mono); letter-spacing: .08em; }
.mf-tab-title { font: 400 1.3rem/1 var(--serif); margin: 0; white-space: nowrap; }

.mf-tab.is-active {
  background: var(--c);
  border-color: transparent;
  color: var(--ink);
  padding-top: 14px;
}

/* Chrome-style outward flares at the base of the active tab */
.mf-tab.is-active::before,
.mf-tab.is-active::after {
  bottom: 0;
  content: "";
  height: 12px;
  position: absolute;
  width: 12px;
}
.mf-tab.is-active::before {
  background: radial-gradient(circle at 0 0, transparent 12px, var(--c) 12.5px);
  left: -12px;
}
.mf-tab.is-active::after {
  background: radial-gradient(circle at 12px 0, transparent 12px, var(--c) 12.5px);
  right: -12px;
}
.mf-tab:first-child.is-active::before { display: none; }

.mf-panel {
  border-radius: 0 12px 12px 12px;
  display: grid;
  gap: 24px;
  grid-template-columns: 1.35fr 1fr;
  padding: 24px;
}
.mf-panel[hidden] { display: none; }
.mf-panel { background: var(--surface); color: var(--ink); }

.mf-panel.is-entering { animation: mf-enter 260ms ease; }
@keyframes mf-enter {
  from { opacity: 0; transform: translateY(7px); }
  to { opacity: 1; transform: none; }
}

.mf-media {
  aspect-ratio: 16 / 9;
  background: rgba(0, 0, 0, .18);
  border-radius: 8px;
  overflow: hidden;
  position: relative;
}
.mf-media video,
.mf-media img { display: block; height: 100%; object-fit: cover; width: 100%; }
.mf-media img.mf-kenburns { animation: mf-kenburns 26s ease-in-out infinite alternate; }
@keyframes mf-kenburns {
  from { transform: scale(1) translateX(0); }
  to { transform: scale(1.09) translateX(-2.5%); }
}
.mf-media-caption {
  background: rgba(10, 14, 11, .62);
  border-radius: 4px;
  bottom: 10px;
  color: #f2f1e8;
  font: 400 .58rem/1 var(--mono);
  left: 10px;
  letter-spacing: .07em;
  padding: 6px 8px;
  position: absolute;
  text-transform: uppercase;
}

.mf-detail { display: flex; flex-direction: column; gap: 15px; min-width: 0; }
.mf-detail > p { font-size: .86rem; line-height: 1.55; margin: 0; }
.mf-tag {
  align-self: flex-start;
  border: 1px solid currentColor;
  border-radius: 20px;
  font: 400 .58rem/1 var(--mono);
  opacity: .85;
  padding: 7px 10px;
  text-transform: uppercase;
}

.mf-chips { display: flex; flex-wrap: wrap; gap: 6px; }
.mf-chip {
  border: 1px solid currentColor;
  border-radius: 20px;
  font: 400 .6rem/1 var(--mono);
  opacity: .9;
  padding: 6px 9px;
  text-transform: uppercase;
}

.mf-flow {
  align-items: center;
  display: flex;
  flex-wrap: wrap;
  font: 400 .78rem/1.5 var(--mono);
  gap: 8px 10px;
  margin-top: auto;
}
.mf-flow-arrow { opacity: .6; }
.mf-pill {
  align-items: center;
  border: 1px solid currentColor;
  border-radius: 6px;
  display: inline-flex;
  gap: 7px;
  padding: 6px 9px;
  white-space: nowrap;
}
.mf-pill svg { display: block; flex: none; height: 11px; width: 11px; }

.mf-substeps { display: grid; gap: 9px; }
.mf-substep {
  align-items: baseline;
  display: flex;
  font-size: .8rem;
  gap: 10px;
  line-height: 1.5;
}
.mf-substep-index { flex: none; font: 400 .62rem/1.9 var(--mono); opacity: .75; }
.mf-substep .mf-m { white-space: nowrap; }

.mf-m { font-family: var(--mono); font-size: .93em; }
.mf-m sub { font-size: .68em; }

[data-tip] {
  border-bottom: 1px dotted currentColor;
  cursor: help;
  text-decoration: none;
}
[data-tip]:focus-visible { outline: 1px solid currentColor; outline-offset: 2px; }

.mf-tooltip {
  background: var(--paper-light);
  border: 1px solid var(--line);
  border-radius: 7px;
  box-shadow: 0 6px 24px rgba(0, 0, 0, .14);
  color: var(--ink);
  font: 400 .74rem/1.5 var(--sans);
  max-width: 290px;
  opacity: 0;
  padding: 10px 13px;
  pointer-events: none;
  position: absolute;
  transition: opacity 140ms ease;
  z-index: 40;
}
.mf-tooltip.is-visible { opacity: 1; }
.mf-tooltip .mf-m { font-size: .88em; }

.mf-hint {
  color: var(--muted);
  font: 300 .65rem/1.6 var(--mono);
  margin: 10px 0 0;
  text-align: center;
}

@media (max-width: 900px) {
  .mf-panel { gap: 16px; grid-template-columns: 1fr; padding: 18px; }
  .mf-tab { gap: 8px; padding: 10px 14px 11px; }
  .mf-tab-title { font-size: 1.15rem; }
  .mf-hint { display: none; }
}

@media (prefers-reduced-motion: reduce) {
  .mf-tab { transition: none; }
  .mf-panel.is-entering { animation: none; }
  .mf-media img.mf-kenburns { animation: none; }
  .mf-tooltip { transition: none; }
}

/* Hero overview film */
.film-frame {
  aspect-ratio: 16 / 9;
  background: #000;
  overflow: hidden;
  position: relative;
}
.film-frame video { display: block; height: 100%; object-fit: cover; width: 100%; }

/* Populated capability cards */
.media-card .media-placeholder.has-video { aspect-ratio: 16 / 9; }
.media-card-wide .media-placeholder.has-video { aspect-ratio: 16 / 7; }
.media-placeholder.has-video .media-index {
  background: rgba(10, 14, 11, .62);
  border-radius: 4px;
  color: #f2f1e8;
  padding: 6px 8px;
}
@media (max-width: 620px) {
  .media-card .media-placeholder.has-video { aspect-ratio: 16 / 9; }
  .media-card-wide .media-placeholder.has-video { aspect-ratio: 16 / 7; }
}

/* Visuo-tactile feature card */
.tactile-feature { grid-column: 1 / -1; }
.tactile-layout {
  align-items: center;
  background: var(--surface);
  border-radius: 12px;
  display: grid;
  gap: 30px;
  grid-template-columns: 1fr 1.15fr;
  padding: 28px;
}
.tactile-copy .section-kicker { margin-bottom: 14px; }
.tactile-copy h3 {
  font: 400 clamp(1.9rem, 3vw, 2.8rem)/1.05 var(--serif);
  letter-spacing: -.03em;
  margin: 0 0 16px;
}
.tactile-copy p:last-of-type {
  color: var(--muted);
  font-size: .88rem;
  line-height: 1.6;
  margin: 0;
  max-width: 46ch;
}
.tactile-media video {
  background: #0a0e0b;
  border-radius: 8px;
  display: block;
  max-height: 620px;
  object-fit: contain;
  width: 100%;
}
@media (max-width: 900px) {
  .tactile-layout { grid-template-columns: 1fr; padding: 20px; }
  .tactile-media video { max-height: 500px; }
}

/* Rollout gallery */
.gallery-section { padding-bottom: 160px; scroll-margin-top: 90px; }
.gallery-stages { border-bottom: 1px solid var(--line); display: flex; flex-wrap: wrap; gap: 4px; }
.gallery-stage {
  align-items: baseline;
  background: transparent;
  border: 0;
  border-bottom: 2px solid transparent;
  color: var(--muted);
  cursor: pointer;
  display: flex;
  font: 400 1.15rem/1 var(--serif);
  gap: 9px;
  margin-bottom: -1px;
  padding: 12px 16px 14px;
  transition: color 160ms ease, border-color 160ms ease;
}
.gallery-stage:hover { color: var(--ink); }
.gallery-stage.is-active { border-bottom-color: var(--ink); color: var(--ink); }
.gallery-stage-num { font: 400 .58rem/1 var(--mono); letter-spacing: .08em; }
.gallery-tags { display: flex; flex-wrap: wrap; gap: 8px; margin: 18px 0 22px; min-height: 33px; }
.gallery-chip {
  background: transparent;
  border: 1px solid var(--line);
  border-radius: 20px;
  color: var(--muted);
  cursor: pointer;
  font: 400 .68rem/1 var(--mono);
  letter-spacing: .05em;
  padding: 9px 13px;
  text-transform: uppercase;
  transition: background 160ms ease, color 160ms ease, border-color 160ms ease;
}
.gallery-chip[hidden] { display: none; }
.gallery-chip:hover { border-color: var(--ink); color: var(--ink); }
.gallery-chip.is-active { background: var(--ink); border-color: var(--ink); color: var(--paper); }
.gallery-grid { display: grid; gap: 14px; grid-template-columns: repeat(auto-fill, minmax(300px, 1fr)); }
.gallery-card { margin: 0; }
.gallery-card[hidden] { display: none; }
.gallery-media {
  aspect-ratio: 16 / 9;
  background: #0a0e0b;
  border-radius: 8px;
  overflow: hidden;
  position: relative;
}
.gallery-media video { display: block; height: 100%; object-fit: cover; width: 100%; }
.gallery-card[data-cat="tactile"] .gallery-media { aspect-ratio: 1 / 1; }
.gallery-card[data-cat="tactile"] .gallery-media video { object-fit: contain; }
.gallery-card figcaption { display: flex; font-size: .75rem; justify-content: space-between; padding: 9px 2px 0; }
.gallery-card figcaption span { color: var(--muted); }
@media (max-width: 620px) {
  .gallery-grid { grid-template-columns: 1fr 1fr; }
  .gallery-card figcaption { flex-direction: column; }
  .gallery-stage { font-size: 1rem; padding: 10px 10px 12px; }
}

/* Grasp quality analysis */
.grasp-analysis {
  --grasp-green: #607d32;
  border-top: 1px solid var(--line);
  margin-top: 90px;
  padding-top: 30px;
}
html[data-theme="dark"] .grasp-analysis { --grasp-green: #c8f04b; }
.grasp-heading { display: grid; gap: 32px 6vw; grid-template-columns: 1fr 1fr; margin-bottom: 34px; }
.grasp-heading .section-kicker { color: var(--muted); grid-column: 1 / -1; margin-bottom: 0; }
.grasp-heading h3 {
  font: 400 clamp(1.9rem, 3.2vw, 3rem)/1.08 var(--serif);
  letter-spacing: -.03em;
  margin: 0;
}
.grasp-heading h3 em { color: var(--grasp-green); font-style: italic; }
.grasp-heading > p { color: var(--muted); font-size: .88rem; line-height: 1.65; margin: 4px 0 0; max-width: 54ch; }
.grasp-pairs { display: grid; gap: 20px; grid-template-columns: 1fr 1fr; }
.grasp-pair { align-content: start; display: grid; gap: 10px; grid-template-columns: 1fr 1fr; margin: 0; }
.grasp-cell { position: relative; }
.grasp-cell video {
  aspect-ratio: 16 / 9;
  background: #0a0e0b;
  border-radius: 8px;
  display: block;
  object-fit: cover;
  width: 100%;
}
.grasp-chip {
  border-radius: 4px;
  font: 400 .55rem/1 var(--mono);
  left: 8px;
  letter-spacing: .06em;
  padding: 5px 7px;
  position: absolute;
  text-transform: uppercase;
  top: 8px;
  z-index: 2;
}
.grasp-chip-adept { background: var(--lime); color: #172019; }
.grasp-chip-scratch { background: var(--coral); color: #172019; }
.grasp-pair figcaption { color: var(--muted); font: 300 .65rem/1.6 var(--mono); grid-column: 1 / -1; }
@media (max-width: 1150px) {
  .grasp-pairs { grid-template-columns: 1fr; }
}
@media (max-width: 900px) {
  .grasp-heading { grid-template-columns: 1fr; gap: 14px; }
}
@media (max-width: 620px) {
  .grasp-pair { grid-template-columns: 1fr; }
}

/* Real-world success plots */
.plot-block {
  --plot-blue: #3d76b2;
  --plot-green: #7ba32a;
  border-top: 1px solid var(--line);
  margin-top: 90px;
  padding-top: 30px;
}
html[data-theme="dark"] .plot-block {
  --plot-blue: #85b6ee;
  --plot-green: #c3e75c;
}
.plot-grid { display: grid; gap: 14px; grid-template-columns: repeat(3, minmax(0, 1fr)); }
.plot-card {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 10px;
  margin: 0;
  padding: 18px 18px 10px;
}
.plot-head { align-items: baseline; display: flex; flex-wrap: wrap; gap: 10px 18px; justify-content: space-between; margin-bottom: 6px; }
.plot-head h4 { font: 400 .95rem/1.25 var(--serif); letter-spacing: .01em; margin: 0; }
.plot-legend { display: flex; gap: 16px; }
.plot-key { color: var(--muted); font: 400 .6rem/1 var(--mono); letter-spacing: .06em; text-transform: uppercase; }
.plot-key::before { border-radius: 50%; content: ""; display: inline-block; height: 8px; margin-right: 6px; vertical-align: 0; width: 8px; }
.plot-key-blue::before { background: var(--plot-blue); }
.plot-key-green::before { background: var(--plot-green); }
.plot-svg svg { display: block; height: auto; width: 100%; }
.pt-grid { stroke: var(--line); stroke-width: 1; }
.pt-axis { fill: var(--muted); font: 400 12px var(--mono); }
.pt-stage { fill: var(--ink); font: 400 12.5px var(--sans); opacity: .85; }
.pt-line { fill: none; stroke-linecap: round; stroke-linejoin: round; stroke-width: 3.5; }
.pt-marker { stroke-width: 0; }
.pt-lbl { font: 500 13px var(--mono); }
@media (max-width: 1150px) {
  .plot-grid { grid-template-columns: 1fr; }
  .plot-card { margin: 0 auto; max-width: 640px; width: 100%; }
}

/* Pre-training primitive catalog */
.prim-block { border-top: 1px solid var(--line); margin-top: 100px; padding-top: 25px; }
.prim-title { font: 400 clamp(1.9rem, 3.2vw, 3rem)/1.05 var(--serif); letter-spacing: -.03em; margin: 0 0 14px; }
.prim-lead { color: var(--muted); font-size: .88rem; line-height: 1.65; margin: 0; max-width: 62ch; }
.prim-layout { align-items: start; display: grid; gap: 26px; grid-template-columns: 1.15fr .85fr; margin-top: 30px; }
.prim-grid { display: grid; gap: 10px; grid-template-columns: repeat(4, 1fr); }
.prim-tile {
  aspect-ratio: 1;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 10px;
  cursor: pointer;
  padding: 12px;
  position: relative;
  transition: border-color 150ms ease;
}
@media (min-width: 901px) {
  .prim-tile { aspect-ratio: 1.19 / 1; }
}
.prim-tile img {
  display: block;
  height: 100%;
  object-fit: contain;
  transition: transform 450ms cubic-bezier(.4, 0, .2, 1);
  width: 100%;
}
.prim-grid.is-scaled .prim-tile img { transform: scale(var(--s)); }
.prim-tile > span { color: var(--muted); font: 400 .55rem/1 var(--mono); left: 10px; position: absolute; top: 9px; }
.prim-tile:hover { border-color: var(--ink); }
.prim-tile:focus-visible { outline: 1px solid var(--ink); outline-offset: 2px; }
.prim-tile.is-active { border-color: var(--ink); box-shadow: inset 0 0 0 1px var(--ink); }
.prim-toggle {
  align-items: center;
  color: var(--muted);
  cursor: pointer;
  display: flex;
  font: 400 .68rem/1 var(--mono);
  gap: 9px;
  letter-spacing: .05em;
  margin-top: 14px;
  text-transform: uppercase;
}
.prim-toggle input { accent-color: var(--ink); }
.prim-detail { margin: 0; }
.prim-detail video {
  aspect-ratio: 16 / 9;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 10px;
  display: block;
  object-fit: cover;
  width: 100%;
}
.prim-detail figcaption { display: flex; font-size: .78rem; justify-content: space-between; padding: 10px 2px; }
.prim-detail figcaption > span:last-child { color: var(--muted); }
@media (max-width: 900px) {
  .prim-layout { grid-template-columns: 1fr; }
}
@media (prefers-reduced-motion: reduce) {
  .prim-tile img { transition: none; }
}

/* Primitive detail: stacked robot rollouts */
.prim-cell { margin-bottom: 10px; position: relative; }
.prim-cell video { aspect-ratio: 16 / 9; background: var(--surface); border: 1px solid var(--line); border-radius: 10px; display: block; object-fit: cover; width: 100%; }
.prim-robot {
  background: rgba(10, 14, 11, .62);
  border-radius: 4px;
  color: #f2f1e8;
  font: 400 .55rem/1 var(--mono);
  left: 10px;
  letter-spacing: .07em;
  padding: 5px 7px;
  position: absolute;
  text-transform: uppercase;
  top: 10px;
}
.prim-pending {
  color: var(--muted);
  font: 400 .62rem/1.5 var(--mono);
  left: 50%;
  position: absolute;
  text-align: center;
  top: 50%;
  transform: translate(-50%, -50%);
  width: 80%;
}

/* Michigan Robotics logo: match NVIDIA's monochrome treatment in dark mode */
html[data-theme="dark"] .michigan-logo img { content: url("assets/michigan-robotics-logo-dark.png"); }

/* Gripper vs hand speed comparison */
.speed-compare { margin-top: 30px; }

/* Single-line section headings */
.section-heading h2.h2-oneline { font-size: clamp(1.7rem, 2.9vw, 3.2rem); white-space: nowrap; }

/* Stage 5: stacked emergent-dexterity media */
.mf-media-stack { align-content: start; display: grid; gap: 10px; }